# Base Onchain Risk & Token Intelligence API

> Base Onchain Risk & Token Intelligence API is a paid API for AI agents from xx402.icu, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns risk flags, recent transfer history, and token/account intelligence for a given Base/EVM address and ERC20 token pair

## Facts

- Endpoint: GET https://xx402.icu/x402/api/base-address-risk
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-onchain-risk-token-intelligence-api-dee517d4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TtWw54cDlAbYqeKI7yCs1

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability base-onchain-risk-token-intelligence-api-dee517d4
```

Example prompt: Can you run a risk check on Base wallet 0xfBDB0Ad415e95c4843FD872FAc967459572910f1 holding USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) — show me the latest risk flags and up to 10 recent transfers over the last 3000 blocks?

## When to prefer this

Use this endpoint when you need onchain risk intelligence specifically for Base network addresses and ERC20 tokens — particularly for DeFi agents evaluating counterparty safety, token trade safety, approval exposure, liquidity exit risk, or holder concentration before executing a transaction or investment. Prefer this over generic blockchain explorers when you need structured, actionable risk flags rather than raw transaction data.

## Known failure modes

- Invalid EVM address format returns a 400 error
- Token address not recognized on Base returns empty token data
- Block window outside 100–5000 range returns validation error
- Payment not included or insufficient USDC triggers 402 Payment Required
- Rate limiting or upstream data lag may return stale or partial results

## How this service works

Paid x402 buyer market scout, x402 paid resource preflight, x402 seller visibility audit, Base actionable risk feed, liquidity exit risk alerts, pool launch risk feed, stable asset risk feed, contract control event feed, protocol outflow risk feed, yield pool allocation risk feed, protocol fee quality feed, token watchlist decision packet, wallet watchlist decision packet, approval risk feed, ranked DeFi review queues with incident history, onchain risk decision packet, promoted token campaign decision packet, large transfer decision packet, token candidate screening decision radar, DEX pair anomaly decision radar, wallet safety decision packet, counterparty flow, allowance, approval exposure, DEX pair routing risk, token trade safety, token liquidity, token flow, holder concentration, contract controls, batch token screening decision packets, token diligence, and BTC15 prediction-market microstructure, execution-friction, calibration-slice, recent market tape, resolved feature sample, and threshold-pressure packets for agents and risk tools.

## Output

Returns a JSON object with keys: account (wallet-level risk summary), token (token-level risk profile including liquidity, holder concentration, and control flags), recent_transfers (sampled transfer activity in the specified block window), risk_flags (list of triggered risk signals such as approval exposure, exit liquidity risk, anomalous flows), and sources (data provenance).

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "address_decision",
  "priority_queue",
  "best_next_products",
  "risk_breakdown",
  "review_queue",
  "avoid_queue",
  "screening_decision",
  "account",
  "token",
  "token_balance",
  "recent_transfers",
  "counterparty_exposure",
  "counterparty_review_queue",
  "bucket_counts",
  "risk_flags",
  "risk_level",
  "source_status",
  "sources"
 ],
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-onchain-risk-token-intelligence-api-dee517d4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xx402.icu](https://www.zero.xyz/host/xx402.icu/llms.txt)